The Grafen Professional Polyurethane Sealant PU 50 is a one-component elastic polyurethane sealant designed for professional sealing and bonding applications.
After curing, it forms a durable, flexible joint resistant to weather, moisture, vibration, and mechanical stress.
PU 50 adheres excellently to concrete, ceramics, metal, wood, and plastics, suitable for both interior and exterior use.
Application
- Sealing of cement and ceramic surfaces
 - Roof, terrace, and floor joints
 - Sealing of concrete expansion and construction joints
 - Bonding and sealing of flooring and structural components
 
Instructions for Use
- Ensure the surface is clean, dry, and grease-free.
 - Cut the nozzle diagonally and apply the sealant evenly with a caulking gun.
 - Smooth and press the joint for better adhesion.
 - Allow to cure; curing time depends on layer thickness and ambient conditions.
 
Product Specifications
- Content: 300 ml
 - Type: One-component polyurethane sealant
 - Colour: White
 - Density: 1.16 g/cm³ ± 0.03
 - Main components: Xylene (≥5 – <10 %), Titanium Dioxide (≥1 – <5 %), Ethylbenzene (≥1 – <5 %), 4,4’-Methylenediphenyl Diisocyanate (≥0.5 – <1 %), Calcium Oxide (≥0.5 – <1 %), 4-Isocyanatosulphonyltoluene (Tosyl isocyanate) (<0.5 %), Phosphoric acid (<0.5 %)
 - Storage: store in a dry, cool place in tightly closed containers at +5 °C to +25 °C, away from heat, sparks, sunlight, and open flame
 - Shelf life: 12 months from production date
 
